How did ashfur burn the forest?

Ashfur burned the forest as part of his vengeful plan against the Clans in the "Warriors" series. He used his knowledge of fire to create a devastating blaze, intending to destroy his enemies and force them into a desperate situation. This act was fueled by his anger over lost love and betrayal, showcasing the darker side of his character and his willingness to cause harm to achieve his goals. Ultimately, the fire had significant consequences for the Clans and their territories.